TY - JOUR
T1 - Iron-based nanoparticles for toxic organic degradation
T2 - Silica platform and green synthesis
AU - Meeks, Noah D.
AU - Smuleac, Vasile
AU - Stevens, Christopher
AU - Bhattacharyya, Dibakar
PY - 2012/7/18
Y1 - 2012/7/18
N2 - Iron and iron oxide nanoparticles (NPs) are finding wide applications for the remediation of various toxic chloro-organic compounds (such as trichloroethylene, TCE) via reductive and oxidative processes. In this study, Fe NPs (30-50 nm) were synthesized by reduction from ferric ions immobilized (by ion exchange) on a platform (two types of sulfonated silica particles) in order to prevent NP agglomeration. The Fe NPs were then oxidized and their effectiveness for the oxidative dechlorination of TCE via the heterogeneous decomposition of hydrogen peroxide to OH on the surface of the iron oxide NPs was demonstrated. For the reductive approach, the use of ascorbic acid as a "green" reducing agent in conjunction with a secondary metal (Pd) inhibits NP oxidation and agglomeration through surface adsorbed species. The Fe/Pd NPs have been successfully applied for the dechlorination of TCE (k SA, surface-area normalized reaction rate, = 8.1 × 10 -4 L/m 2 h).
AB - Iron and iron oxide nanoparticles (NPs) are finding wide applications for the remediation of various toxic chloro-organic compounds (such as trichloroethylene, TCE) via reductive and oxidative processes. In this study, Fe NPs (30-50 nm) were synthesized by reduction from ferric ions immobilized (by ion exchange) on a platform (two types of sulfonated silica particles) in order to prevent NP agglomeration. The Fe NPs were then oxidized and their effectiveness for the oxidative dechlorination of TCE via the heterogeneous decomposition of hydrogen peroxide to OH on the surface of the iron oxide NPs was demonstrated. For the reductive approach, the use of ascorbic acid as a "green" reducing agent in conjunction with a secondary metal (Pd) inhibits NP oxidation and agglomeration through surface adsorbed species. The Fe/Pd NPs have been successfully applied for the dechlorination of TCE (k SA, surface-area normalized reaction rate, = 8.1 × 10 -4 L/m 2 h).
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U2 - 10.1021/ie301031u
DO - 10.1021/ie301031u
M3 - Article
AN - SCOPUS:84863950222
SN - 0888-5885
VL - 51
SP - 9581
EP - 9590
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 28
ER -